AD AD75004KP Quad 12-bit d/a converter Datasheet

a
FEATURES
4 Complete 12-Bit D/A Functions
Double-Buffered Latches
Simultaneous Update of All DACs Possible
65 V Output Range
High Stability Bandgap Reference
Monolithic BiMOS Construction
Guaranteed Monotonic over Temperature
3/4 LSB Linearity Guaranteed over Temperature
4 ms max Settling Time to 0.01%
Operates with 612 V Supplies
Low Power: 720 mW max Including Reference
TTL/5 V CMOS Compatible Logic Inputs
8-Bit Microprocessor Interface
24-Pin PDIP or 28-Lead PLCC Package
PRODUCT DESCRIPTION
The AD75004 contains four complete, voltage output, 12-bit
digital-to-analog converters, a high stability bandgap reference,
and double-buffered input latches on a single chip. The converters use 12 precision high speed bipolar current steering switches
and laser-trimmed thin-film resistor networks to provide fast
settling time and high accuracy.
Microprocessor compatibility is achieved by the on-chip
double-buffered latches. The design of the input latches allows
direct interface to 8-bit buses. The 12 bits of data from the first
rank of latches can then be transferred to the second rank,
avoiding generation of spurious analog output values. The latch
responds to strobe pulses as short as 50 ns, allowing use with
fast microprocessors.
The functional completeness and high performance of the
AD75004 results from a combination of advanced switch design, the BiMOS II fabrication process, and proven laser trimming technology. BiMOS II is an epitaxial BiCMOS process
optimized for analog and converter functions. The AD75004 is
trimmed at the wafer level and is specified to ± 1/2 LSB maximum linearity error at 25°C and ± 3/4 LSB over the full operating temperature range. The on-chip output amplifiers provide
an output range of ± 5 V, with 1 LSB equal to 2.44 mV.
Quad 12-Bit
D/A Converter
AD75004
FUNCTIONAL BLOCK DIAGRAM
V REFOUT
V REFIN
+5V
2.22k
VOLTAGE
REFERENCE
INPUT
LATCHES
8 + 4-BIT
LATCHES
DAC
LATCHES
12-BIT
LATCH
12-BIT
DAC
10k
8 + 4-BIT
LATCHES
12-BIT
LATCH
12-BIT
DAC
10k
8 + 4-BIT
LATCHES
12-BIT
LATCH
12-BIT
DAC
10k
8 + 4-BIT
LATCHES
12-BIT
LATCH
12-BIT
DAC
10k
V OUT3
D7
D6
D5
D4
D3
D2
D1
D0
TTL
INPUTS
8-BIT
BUS
CONTROL LOGIC
TTL INPUTS
AD75004
V OUT2
VOUT1
VOUT0
+12V
V DD
–12V
VSS
AGND
DGND
CS WR A3 A2 A1 A0
The bandgap reference on the chip has low noise, long term
stability and temperature drift characteristics comparable to
discrete reference diodes. The absolute value of the reference is
laser trimmed to +5.00 V with 0.6% maximum error. Its temperature coefficient is also laser trimmed.
Typical full-scale gain TC is 15 ppm/°C. With guaranteed
monotonicity over the full temperature range, the AD75004 is
well suited for wide temperature range performance.
REV. A
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
Fax: 617/326-8703
AD75004–SPECIFICATIONS (T = +258C, 612.0 V power supplies unless otherwise noted)
A
Parameter
Symbol
Min
DIGITAL INPUTS (D0–D7, A0–A3, CS, WR)
Logic Levels (TTL Compatible)
Input Voltage, Logic “1”
Input Voltage, Logic “0”
Input Current, VIH = 5.5 V
Input Current, VIL = 0.8 V
Input Capacitance
VIH
VIL
IIH
IIL
CIN
2.0
0
ACCURACY
Resolution
Integral Linearity Error
Integral Linearity Error, TMIN to TMAX
Differential Linearity Error
Differential Linearity Error, TMIN to TMAX
Gain (Full-Scale) Error1
Gain Error Drift, TMIN to TMAX1
Bipolar Zero Error1
Bipolar Zero Error Drift, TMIN to TMAX1
Typ
DYNAMIC PERFORMANCE
Settling Time to ± 0.01% of FSR
for FSR Change, 2 kΩ || 500 pF Load
Slew Rate, 2 kΩ || 500 pF Load
Digital Input Crosstalk (Static)2
VOLTAGE REFERENCE
Reference Output Voltage
Temperature Coefficient
Reference Output Currents3
Reference Input Voltage
Reference Input Current @ 5.0 V
TEMPERATURE RANGE
Specification
Storage
5.5
0.8
10
10
10
V
V
µA
µA
pF
12
61/2
± 3/4
63/4
Bits
LSB
LSB
LSB
610
± 30
62
±7
LSB
ppm/°C
LSB
ppm/°C
± 1/2
±1
±1
61
64
62
LSB
LSB
LSB
2
4
–50
µs
V/µs
dB
640
V
mA
mA
5
VOUT
IOUT
±5
VREFOUT
4.97
3.0
4.5
VREFIN
IREFIN
POWER SUPPLY GAIN SENSITIVITY
∆Gain/∆VDD, VDD = +10.8 to +13.2 V dc1
∆Gain/∆VSS, VSS = –10.8 to –13.2 V dc1
POWER SUPPLY REQUIREMENTS
Voltage Range
Supply Currents
Units
± 1/4
± 1/2
± 1/2
Guaranteed Monotonic
±2
± 15
±1
±3
CHANNEL-TO-CHANNEL MISMATCH
Integral Linearity Error
Gain Error1
Bipolar Zero Error1
ANALOG OUTPUTS
Full-Scale Range (FSR)
Output Current
Short Circuit Limit Current
Max
VDD, VSS
IDD, ISS
610.8
TMIN, TMAX
0
–65
±5
5.00
± 15
5.0
5.0
5.03
± 25
5.5
3.0
V
ppm/°C
mA
V
mA
± 15
± 15
625
625
ppm of FSR/%
ppm of FSR/%
± 12
± 25
613.2
630
V
mA
+70
+150
°C
°C
NOTES
1
Gain and bipolar zero errors are measured using internal voltage reference and include its errors.
2
Digital crosstalk is defined as the change in any one output’s steady state value as a result of any other output being driven from VOUTMIN to VOUTMAX into a
2 kΩ || 500 pF load by means of varying the digital input code.
3
The internal voltage reference is intended to drive on-chip only; buffer it if using it externally.
4
All minimum and maximum specifications are guaranteed, and specifications shown in boldface are tested on all production units at final electrical test. Results from
those tests are used to calculate outgoing quality levels.
Specifications subject to change without notice.
–2–
REV. A
AD75004
TIMING CHARACTERISTICS1
TRUTH TABLE
(TA = +258C, 612.0 V power supplies unless otherwise noted)
Parameter
Symbol
Min
Units
Address Setup Time
Address Hold Time
Data Setup Time
Data Hold Time
Chip Select to Write Setup Time
Write to Chip Select Hold Time
Write Pulse Width
t1
t2
t3
t4
t5
t6
t7
30
10
10
45
0
0
50
ns
ns
ns
ns
ns
ns
ns
Operation
1
X
0
0
0
0
No operation
No operation
8 LSBs → one input latch
4 MSBs → one input latch
Update one DAC latch
Update all 4 DAC latches
X
1
0
0
0
0
X
X
0
0
1
1
X
X
0
1
0
1
X
X
A1*
A1*
A1*
X
X
X
A0*
A0*
A0*
X
NOTE
*The A1 and A0 inputs specify the relevant channel.
NOTES
1
Timing measurement reference level is 1.5 V.
Specifications subject to change without notice
ADDRESS INPUTS
(A0–A3)
t2
t1
DATA INPUTS
(D0–D7)
t3
CHIP SELECT
(CS)
WRITE
(WR)
Control and Address Lines
CS WR A3 A2
A1 A0
t4
A1
A0
Channel
0
0
1
1
0
1
0
1
0
1
2
3
t6
t5
t7
ABSOLUTE MAXIMUM RATINGS*
(TA = +25°C unless otherwise noted)
VDD to DGND
VSS to DGND
VDD to VSS
VREFIN to AGND
Digital Inputs to DGND
AGND to DGND
Short to AGND on Analog Outputs
Power Dissipation
Specification Temperature Range
Storage Temperature
Lead Temperature
Min
Max
Units
–0.3
–18
–0.3
–0.3
–0.3
–0.3
+18
+0.3
+26.4
VDD
VDD
+0.3
Indefinite
1.0
+70
+150
+300
V
V
V
V
V
V
sec
W
°C
°C
°C
0
–65
Conditions
TA ≤ 75°C
Soldering, 10 seconds
*Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress
ratings only and functional operation of the device at these or any other conditions above those indicated in the operational
sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect
device reliability.
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection.
Although the AD75004 features proprietary ESD protection circuitry, permanent damage may
occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD
precautions are recommended to avoid performance degradation or loss of functionality.
ORDERING GUIDE
Model
Temperature Range
Package Option*
AD75004KN
AD75004KP
0°C to +70°C
0°C to +70°C
N-24A
P-28A
*N = Plastic DIP; P = Plastic Leaded Chip Carrier.
REV. A
–3–
WARNING!
ESD SENSITIVE DEVICE
AD75004
PIN DESCRIPTIONS
24 V DD
Data Input Bit 7
Data Input Bit 6
Data Input Bit 5
Data Input Bit 4
Data Input Bit 3 or 11 (MSB)
Data Input Bit 2 or 10
Data Input Bit 1 or 9
Data Input Bit 0 (LSB) or 8
Chip Select Input; Active Low
Write Input; Active Low
Address Input Bit 3 (MSB)
Address Input Bit 2
Address Input Bit 1
Address Input Bit 0 (LSB)
Digital Ground
Analog Ground
–12 V Power Supply
+5 V Reference Output
Reference Input
Analog Output 0
Analog Output 1
Analog Output 2
Analog Output 3
+12 V Power Supply
No Internal Connection
No Internal Connection
No Internal Connection
No Internal Connection
2
23 V OUT3
5
20 V OUT0
AD75004KN
6
TOP VIEW
(Not to Scale)
D1 7
19 V REFIN
18 V REFOUT
D0
8
17 V SS
CS
9
16 AGND
WR 10
15 DGND
A3 11
14 A0
A2 12
13 A1
D4
5
D3
6
D2
7
NC
8
D1
9
2
1
28
VOUT2
3
VOUT3
4
V DD
D6
28-Pin PLCC
27
26
25 NC
24 VOUT1
AD75004KP
23 VOUT0
22 VREFIN
TOP VIEW
(Not to Scale)
21 VREFOUT
D0 10
20 VSS
CS 11
19
NC
12
13
14
15
16
17
18
DGND
LSB
1111
0001
0000
1111
0000
D3
A0
(2047/2048) * VREFIN
(1/2048) * VREFIN
0V
– (1/2048) * VREFIN
–VREFIN
1111
0000
0000
1111
0000
21 V OUT1
A2
MSB
0111
0000
0000
1111
1000
22 V OUT2
4
A1
Analog Output
Voltage
3
D4
D2
BINARY CODE TABLE
Twos Complement
Value in DAC Latch
D5
C1389a–5–10/91
1
D6
D7
D7
D6
D5
D4
D3
D2
D1
D0
CS
WR
A3
A2
A1
A0
DGND
AGND
VSS
VREFOUT
VREFIN
VOUT0
VOUT1
VOUT2
VOUT3
VDD
NC
NC
NC
NC
D7
D5
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
–
–
–
–
Description
A3
Name
WR
1
2
3
5
6
7
9
10
11
13
14
15
16
17
18
19
20
21
22
23
24
26
27
28
4
8
12
25
Plastic
DIP
Pin
NC
PLCC
Pin
PIN CONFIGURATIONS
24-Pin Plastic DIP
NC = NO CONNECT
AGND
OUTLINE DIMENSIONS
Plastic DIP (N-24A)
PLCC (P-28A)
1.290 (32.77)
1.150 (29.21)
24
0.048 (1.21)
0.042 (1.07)
13
0.55 (13.97)
0.53 (13.47)
1
0.2
(5.08)
MAX
0.175 (4.45)
0.12 (3.05)
0.048 (1.21)
0.042 (1.07)
4
5
PIN 1
IDENTIFIER
12
PIN 1
0.060 (1.52)
0.015 (0.38)
0.606 (15.4)
0.594 (15.09)
0.065 (1.66) SEATING
0.45 (1.15) PLANE
0.180 (4.57)
0.165 (4.19)
0.056 (1.42)
0.042 (1.07)
11
12
0.012 (0.305)
0.008 (0.203)
–4–
0.021 (0.53)
0.013 (0.33)
0.050
(1.27)
BSC
(PINS DOWN)
0.020
(0.50)
R
0.025 (0.63)
0.015 (0.38)
26
25
TOP VIEW
0.16 (4.07)
0.14 (3.56)
0.150
(3.81)
MIN
0.02 (0.508) 0.100
0.015 (0.381) (2.54)
BSC
PRINTED IN U.S.A.
Dimensions shown in inches and (mm).
0.032 (0.81)
0.026 (0.66)
19
18
0.456 (11.58)
SQ
0.450 (11.43)
0.495 (12.57)
SQ
0.485 (12.32)
0.430 (10.92)
0.390 (9.91)
0.040 (1.01)
0.025 (0.64)
0.110 (2.79)
0.085 (2.16)
REV. A
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